package com.demo;

import java.util.concurrent.ConcurrentLinkedDeque;

public class PollTask implements Runnable 
{
	private ConcurrentLinkedDeque<String> list;
	
	public PollTask(ConcurrentLinkedDeque<String> list)
	{
		this.list = list;
	}
	
	@Override
	public void run() 
	{
		for (int i = 0; i < 5000; i++) 
		{
			list.pollFirst();
			list.pollLast();
		}
	}

}
